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Circular motion

Total questions: 26

Worksheet time: 22mins

Name
Class
Date
1.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
2.
Which of the following depict the speed of the blowing ball?
a)
A
b)
B
c)
C
d)
D
3.

moving or tending to move toward a center...

a)

centripetal force

b)

centrifugal force

c)

Tangent

d)

Curvature

4.

the process or act of turning or circling around something

a)

Curvature

b)

Rotation

c)

Radius

d)

Orbit

5.
Where is the net force when the rollercoaster is at the top of the loop?
a)
Towards the sky
b)
Towards the Right
c)
Towards the left
d)
Towards the ground
6.
A particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?
a)
A
b)
B
c)
C
d)
D
7.
What is the direction of the velocity at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
8.
What is the direction of the acceleration at point A, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
9.
What is the direction of the acceleration at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
10.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
11.
Which statement is true about an object that is traveling in uniform circular motion?
a)
The speed of the object varies.
b)
The net force on the object is directed toward the center of the circular path.
c)
The direction of the object's velocity is constant.
d)
The net force on the object is directed away from the center of the circular path.
12.
Centripetal acceleration always points
a)
in the direction of the object's motion
b)
in the opposite direction of the object's motion
c)
towards the center of the circle
d)
towards the outside of the circle
13.
What is the direction of the velocity at point A, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
14.
What is the SI unit for circumference?
a)
meter
b)
pi
c)
inches
d)
kilometer
15.

A ball is moving at constant speed around the circle. Which letter represents the acceleration of the ball?

a)

A

b)

B

c)

C

d)

D

e)

Nonsense. The ball can't be accelerating while moving at a constant speed.

16.
Which of the following depict the speed of the blowing ball?
a)
A
b)
B
c)
C
d)
D
17.
If the radius of the string is .3 meters long and the stopper makes 5 revolutions per second, what is the speed of the stopper? (Hint: C=2πr)
a)
9.4 m/s
b)
6.8 m/s
c)
11.7 m/s
d)
3.5 m/s
18.
Centripetal acceleration is ...
a)
Acceleration toward the center of a curved or circular path
b)
Acceleration toward the outside of a circle
c)
Vertical motion instead of horizontal motion
19.

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

a)
b)
c)
d)
20.
Assuming Andromeda rotates at a uniform rate, which stars are moving the fastest?
a)
Stars closest to center
b)
Stars furthest from the center
c)
Stars with the hottest temperature
d)
Stars with the coldest temperature
21.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
22.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
23.
The time taken for one complete circuit is called the... 
a)
Period
b)
Frequency 
c)
Angular velocity
24.

In this diagram, what do the red arrows represent?

a)

the acceleration vector

b)

the velocity vector

c)

the centripetal force vector

d)

the force of gravity

25.

The _______________________ supplies the centripetal force requirement for the car to move in a horizontal circle. Without it, the car would turn its wheels but would not move in a circle (as is the case on an icy surface).

a)

friction force

b)

centrifugal force

c)

normal force

d)

applied force

26.

Why does an object experiencing uniform circular motion have an acceleration?

a)

because it ir changing speed

b)

because it is changing direction

c)

because it is moving n a straight line

d)

because it has mass

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